Kallay Battery

We are professional mobile phone battery manufacturer and supplier in China, and our battery models currently include models 3000+.

20+

We have a very professional R&D engineer and quality control team with more than 20 years of experience in the battery industry.

A +++

Adopting a brand new A++ grade lithium battery cell material system

3000+

Battery Model

About Us

DONGGUAN OVAEST TECHNOLOGY CO.,LTD (HONGKONG KNOPP CORE BATTERY TECNNOLOGY CO.,LTD ) established in 2009,specializes in a wide range of high-tech consumer electronics.

Our Product portfolio includes mobile phone batteries (compatible with mainstream brands such as iPhone,Samsung,Huawei, Xiaomi,LG,Sony ,OPPO,VIVO,iPAD Batteries, and others kinds of mobile phone brand batteries,ect. In 2014, we launched our brand “KALLAY®” brand battery to provide customers with power charging solutions. Our commitment to quality is evidenced by our ISO9001 Certification. We adhere to international standards,with our products receiving CE, FCC, ROHS,MSDS, UN38.3 and Battery materials quality reports ect certifications ,ensuring they meet the diverse and stringent requirements of our global clients.
We have very professional R&D Engineer and Quality Control teams are the top of battery industry. Also importantly, they engaged in battery industry more than 20 years experience. Furthermore, We can fast R & D latest model battery at every month. 
“KALLAY®” mobile phone batteries are produced in accordance with original factory quality standards, and we utilized brand new A++Grade Lithium Battery cells material systems. We are professional mobile phone battery manufacturer and supplier in China, and our battery models currently include models 3000+.
We warmly welcome support wholesaler,retails customers, and also accept OEM,ODM Business.
We insist on the principle of ‘Quality First, Reputation Supreme, Customer Foremost, and Service the Best. We warmly welcome all aldomestic and overseas customers to contact us for mutual benefits and win-win cooperation.—KALLAY®

Global Exhibition

We actively participate in relevant exhibitions around the world to promote the Kallaybattery brand
We are becoming a famous brand in the world

Certificate

Our commitment to quality is evidenced by our ISO9001 Certification. We adhere to international standards,with our products receiving CE, FCC, ROHS,MSDS, UN38.3 and Battery materials quality reports ect certifications ,ensuring they meet the diverse and stringent requirements of our global clients.

What our partners say

The following are the real evaluations of some of our dealers and agents

News

Why Your iPhone Overheats and 7 Simple Tips to Cool It Down

Many iPhone users have encountered overheating, especially during prolonged usage or while running power-intensive applications...

Can Cell Phone Batteries Be Replaced? When Is the Best Time to Replace?

Cell phone batteries are the lifeblood of our devices, ensuring we stay connected and productive...
Q1. Are you a direct manufacturer or a trader?
We are real factory there are 2000sqm and about 200 employee with 5 production lines.
Q2. How is the quality of the battery?
DEJI's mobile phone batteries are manufactured according to original quality standards and are of high quality. We have many agents and distributors worldwide all of whom trust us.
Q3. Is the battery new with no charge cycles?
Yes Our battery used 100% cobalt new cell with 0 cycle.
Q4. Can I get a product catalog and wholesale pric...
Yes sure. Please contact us via WhatsApp or online form and describe the products you need and our sales manager will provide you with a preferential wholesale price list.
Q5. Can you accept OEM orders with a requested pac...
Yes Yes We accept OEM order and make with your LOGO package
Q6. In addition to mobile phone battery products d...
Our factory also produce power bank wireless charger data cables and other electronic products
Q7. How is the after sales service?
A. We have after sales service team to service for after sale questions.
B. We offer 24-hours online service to help buyers to solve problems.
C. We offer market information to buyers.
Start typing to see products you are looking for.
Shopping cart
Sign in

No account yet?

Create an Account

Product Enquiry